MY BEST ... 'My best decision was launching the US edition of Maxim magazine in 1997. It has become hugely successful but, at the time, I was totally involved in CD-ROMs and wasn't expecting to do any more ink-on-paper launches.
US Maxim only happened because Stephen Colvin, a young man who I think very highly of, had been offered a new job and I didn't want to lose him.
I offered him the presidency of a brand-new company, Dennis Publishing US. He accepted, and US Maxim was the new company's first project.
The decision that made me the most money was to sell the US edition of MacUser in 1986 - that realised $20 million.'
MY WORST ...
'Waiting too long to re-enter the business computing magazine market. In 1982, I was a young man who wanted the feel of a couple of million quid in his pocket, so I sold my business-computing magazine Personal Computer World to VNU.
After the sale, I turned my back on a lucrative market because I didn't want to compete with my old mag. I only woke up and smelt the coffee in 1995, with the launch of PC Pro. It's now one of our most profitable titles, but we were only just in time - six months later and it would have been too late.'.